PlayerSettings.Android.preferredInstallLocation

Предпочтительное расположение установки приложения.

using UnityEngine;
using UnityEditor;
using UnityEditor.Build;

public class PreferredInstallLocationSample : MonoBehaviour
{
    [MenuItem("Build/Preferred Install Location Sample")]
    public static void BuildPreferredInstallLocationSample()
    {
        PlayerSettings.SetScriptingBackend(NamedBuildTarget.Android, ScriptingImplementation.IL2CPP);
        PlayerSettings.Android.targetArchitectures = AndroidArchitecture.ARM64;

        //Set preferredInstallLocation
        PlayerSettings.Android.preferredInstallLocation = AndroidPreferredInstallLocation.Auto;

        BuildPlayerOptions options = new BuildPlayerOptions();
        options.scenes = new[] { "Assets/Scenes/SampleScene.unity" };
        options.locationPathName = "Build/AndroidBuild.apk";
        options.target = BuildTarget.Android;
        options.targetGroup = BuildTargetGroup.Android;
        BuildPipeline.BuildPlayer(options);
    }
}